如果附加失败,将错误码存储在 err 中。*/ err = ts_print_bpf__attach(skel); if (err) { fprintf(stderr, "Failed to attach BPF skeleton\n"); goto cleanup; } /* Set up ring buffer polling */ /*创建一个环形缓冲区*/ /*创建一个环形缓冲区 (ring_buffer),并将其关联到 BPF 程序的一个...
struct.error: required argument is not an integer ffff914b43a99d40 389880 rstrnt-adj ::1 39592 ::1 8081 SYN_SENT -> ESTABLISHED 0.081 Exception ignored on calling ctypes callback function: <function PerfEventArray._open_perf_buffer.<locals>.raw_cb_ at 0x7f935235c670> Traceback (most recen...
一、通过top命令可以看到进程的相关信息 在Ubuntu 下,top 命令可以监视即时的进程状态。通过man top查看了top的基本用法,在 top 中,按 u,再输入你的用户名,可以限定只显示以你的身份运行的进程,更方便观察。按 h 可得到帮助。 二、打印task_struct字段信息 2.1、探索task_struct字段: 操作系统为了对进程更好的...
clang -Wall -pipe -O2 -march=native -I/usr/include/bpf/uapi -std=gnu11 -Wextra -Werror -DBPF_DIR_MNT=\"/sys/fs/bpf\" -DBPF_OBJECT_PATH=\"/usr/lib/bpf\" -DMAX_DISPATCHER_ACTIONS=10 -DTOOLS_VERSION=\""1.3.1"\" -DLIBBPF_VERSION=\"1.1.0\" -DRUNDIR=\"/run\" -DHAVE_LIBBP...
unsigned char bit6: 1; unsigned char bit7: 1; unsigned char bit8: 1; } reg_t; reg_t reg; to write in the VI bit one simply does:reg.bit6 = 1and get the value of the bit itself it is easy. When it is time to write to the device you simple cast the the thing to char ...
A watermelon-like internally inflated core- buffer-shell structural Si/electrochemically exfoliated gra- phene/C (Si/EG/C) composite is designed and prepared by the industrially established ball milling and spray drying method. Owing to numerous folds and voids in the EG filled between nano ...
这个我没有理论根据,我是根据perf结果观察的,此处存疑 用std::array 传入模版参数的方式,API 更简洁直观 ) //相当无聊的函数 template<size_t Si,size_t Ei> struct sequence_helper_s { static constexpr size_t Cnt = Ei - Si; using idx_sequence_t = std::make_index_sequence<Cnt>; /// templat...